CVE-2026-24408sigstore has CSRF possibility in OIDC authentication during signing

Descripción

sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. `_OAuthSession` creates a unique "state" and sends it as a parameter in the authentication request but the "state" in the server response seems not not be cross-checked with this value. Version 4.2.0 contains a patch for the issue.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr Vendor Advisory
• https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa Patch
• https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0 ProductRelease Notes